Improvement in hydraulic motors



A. SCHMID.

A l Hydraulic-Motor. No. 165,879. Parentedlulyzmla.

MFETERS` PHOYOLITHQGRAFHLR. WASHINGTON. D C.

ALBER'I` SCHMID, OF ZURICH, SWITZERLAND.

IMPROVEMENT IN HYDRAULIC MOTQRS.

Specification forming part of Letters Patent No. 165,@79, dated July 20, 1875; application filed May 4, 1875.

To all Iwhom yit may concern:

Be it known that I, ALBERT SCHMID, of Zurich, Switzerland, have invented a new and useful Improvement in Hydraulic Motors; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, forming part of this specification, and in which- Figures 1 and 2 represent sectional elevations, at right angles to each other, of ahydraulic motor, having my improvement applied.

This invention, like my former invention, for which Letters Patent No. 124,162 were issued February 27, 1872, relates to that class of engines or motors in which there is an oscillating cylinder moving' on trunnions, and formed with a convex slide-face, the curve otl which is struck from the center line of the trunnions, and forms the segment of a cylinder. This curved slide-face rests and tits accurately upon a stationary concave supporting-surface, which also forms the segment of a hollow cylinder, and contains three ports or openings communicating alternately with two ports or passages in the convex slide-face ot the cylinder during the oscillation or rocking ot' the latter, the said two ports opening into the opposite end of the said cylinder. Said engine or motor may also be constructed in other respects similar to that described in my said former Letters Patent.

The invention consists in a combination, with an engine or motor ot' the description just referred to, of a close box or casing, in which the engine or motor is inclosed, and on or in which the engine is mounted, said casing being provided with an inlet and an outlet for the iuid being worked, or which works the engine, whereby the latter is wholly submerged in the iuid within the case, and the, case forms an air-vessel or pressure-reservoir to control the flow of the fluid into the inlet.

The motor may be used either to transmit power to any other machinery, or it may be driven by an outside driver, accordingly as it is required to be used as a prime mover, or as a pump, or as a water-meter.

Then used as a water-meter, duplicate motors may be inclosed in the same close box or case. Furthermore, Acompressed air or steam may be used as the propelling agent when the motor is a prime mover.

It will suffice here, however, to describe the invention as a single hydraulic engine or motor driven by water.

In the drawing, A is the oscillating cylinder of the engine or motor, and b b its trunnions, which are carried by brackets c c on the interior of the close box or casing B, in which the engine is inclosed. C is the piston ot the engine, and d its rod, which gives motion to a crank, D, of a shaft., E. f [his shaft VE works through a packed sleeve, F, attached to or forming part ot' the casing B, and is provided with a ily-wheel and driving pulley or pulleys, or either. G is the inlet for water to the casing B, and H its outlet. The side of the casing B on which is the outlet H isconstructed internally with a concave t'ace,ff, forming a segment of a hollow cylinder, perforated by the outlet H, and the upper and lower spaces of the casing B immediately above and below the concave face ff, forming passages for the ingress otl water alternately to the upper and lower ends ot' the cylinder as the latter is oscillated, and its convex slideface I brings its passages g g alternately in communication with said passages, and with the exhaust H, to reciprocate the piston within the cylinder, as in my former patent, hereinbet'ore referred to.

The box or casing B is closed in front by a stout glazed face or cover, K, which admits of ready inspection of the engine from the exterior, and is secured by screw-bolts to the main body ot' the casing, to allow of free access to the latter for insertion, removal, or repair of the engine. y

The close box or casing B not only serves to protect the engine, and, by submersion of the latter under the water in the casing, does away with objections consequent on leakage, as well as insuring lubrication., ot' the working parts, but the casing B, onv which may be mounted an air-vessel proper, Bf, and which forms a reservoir for the tluid, constitutes an air-chamber, by the compression ofthe air consequent on the admission of the water to the casing B by the inlet G, and so to reguconcave face f f, through which the outletlatc or make uniform the ow of water into passage H passes, and communicates with the the inlet. oscillating cylinder by the ports g, substan- I claimi tially as shown and described. The oscillating cylinder A, having the con- Vex slide-face I, provided with ports or pas- A. SCHMID. sages g g, in combination with the closed box Witnesses: or casing B, constructed with the inlet and HECH. SULZ,

outlet passages G and H, and the internal E. BRGIN. 

